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Supplemental Cash Flow Information (Tables)
12 Months Ended
Dec. 31, 2011
Supplemental Cash Flow Information [Abstract]  
Changes in operating assets and liabilities
                         
    Year Ended
December 31,
2011

$
    Year Ended
December 31,
2010

$
    Year Ended
December 31,
2009

$
 
       

Accounts receivable

    5,698       (8,442     3,888  

Prepaid expenses and other operating assets

    619       4,018       5,677  

Accounts payable

    (1,054     (326     (6,203

Accrued liabilities

    8,374       (6,222     9,504  

Unearned revenue and other operating liabilities

    (1,876     2,767       10,301  

Restricted cash

    (2,644     —         —    

Advances to and from affiliates and joint venture partners

    (42,551     11,234       3,821  
   

 

 

   

 

 

   

 

 

 

Total

    (33,434     3,029       26,988